Before I start, I want to acknowledge a few things:
- Yes, there are utilities out there that can do this
- Yes, you can look at DNS response time in the Statistics->DNS report
- Yes, you can graph this in Wireshark’s IO graph
There a lot of benefits of doing it this way since you can customize your charts, which may not be possible with the other options and you get a better understanding of what you are reporting.
In the video, I start at the command prompt with nslookup, move on Wireshark covering capture filter, adding a column, creating a display filter and then exporting the trace to be used by Excel.
As I mentioned in the video this technique can be used with all sorts of other protocols when troubleshooting or documenting performance.
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